21355290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:125

約数の個数: 144

約数和(自身を含む): 63862344

約数和(自身を除く): 42507054

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 37, 45, 53, 55, 66, 74, 90, 99, 106, 110, 111, 121, 159, 165, 185, 198, 222, 242, 265, 318, 330, 333, 363, 370, 407, 477, 495, 530, 555, 583, 605, 666, 726, 795, 814, 954, 990, 1089, 1110, 1166, 1210, 1221, 1590, 1665, 1749, 1815, 1961, 2035, 2178, 2385, 2442, 2915, 3330, 3498, 3630, 3663, 3922, 4070, 4477, 4770, 5247, 5445, 5830, 5883, 6105, 6413, 7326, 8745, 8954, 9805, 10494, 10890, 11766, 12210, 12826, 13431, 17490, 17649, 18315, 19239, 19610, 21571, 22385, 26235, 26862, 29415, 32065, 35298, 36630, 38478, 40293, 43142, 44770, 52470, 57717, 58830, 64130, 64713, 67155, 80586, 88245, 96195, 107855, 115434, 129426, 134310, 176490, 192390, 194139, 201465, 215710, 237281, 288585, 323565, 388278, 402930, 474562, 577170, 647130, 711843, 970695, 1186405, 1423686, 1941390, 2135529, 2372810, 3559215, 4271058, 7118430, 10677645, 21355290]

約数ペア:

[(1, 21355290), (2, 10677645), (3, 7118430), (5, 4271058), (6, 3559215), (9, 2372810), (10, 2135529), (11, 1941390), (15, 1423686), (18, 1186405), (22, 970695), (30, 711843), (33, 647130), (37, 577170), (45, 474562), (53, 402930), (55, 388278), (66, 323565), (74, 288585), (90, 237281), (99, 215710), (106, 201465), (110, 194139), (111, 192390), (121, 176490), (159, 134310), (165, 129426), (185, 115434), (198, 107855), (222, 96195), (242, 88245), (265, 80586), (318, 67155), (330, 64713), (333, 64130), (363, 58830), (370, 57717), (407, 52470), (477, 44770), (495, 43142), (530, 40293), (555, 38478), (583, 36630), (605, 35298), (666, 32065), (726, 29415), (795, 26862), (814, 26235), (954, 22385), (990, 21571), (1089, 19610), (1110, 19239), (1166, 18315), (1210, 17649), (1221, 17490), (1590, 13431), (1665, 12826), (1749, 12210), (1815, 11766), (1961, 10890), (2035, 10494), (2178, 9805), (2385, 8954), (2442, 8745), (2915, 7326), (3330, 6413), (3498, 6105), (3630, 5883), (3663, 5830), (3922, 5445), (4070, 5247), (4477, 4770)]